This significantly pre-dates the Assange/Guardian/Greenwald stuff. The purpose of the law was to stop being able to get off child pornography and terrorism char

This significantly pre-dates the Assange/Guardian/Greenwald stuff. The purpose of the law was to stop being able to get off child pornography and terrorism charges by refusing to provide an encryption key. Now, I think the law is misguided in principle and potentially malicious in practice, but it was never about prosecuting journalists.